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Note 10 - Discontinued Operations (Details Textual) - Discontinued Operations, Held-for-Sale or Disposed of by Sale [Member] - Assets Acquired in The Dental Power Agreement [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Proceeds from Sale of Productive Assets |  | $ 2,000 |
Disposal Group, Including Discontinued Operation, Payment Term (Year) |  | 5 years |
Gain (Loss) on Disposition of Assets | $ 340 |  |
Customer Lists [Member] |  |  |
Disposal Group, Including Discontinued Operation, Intangible Assets |  | $ 1,400 | $ 3,100

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